EP 1903728 A1 20080326 - Method and receiving apparatus for estimating a channel in a communications system
Title (en)
Method and receiving apparatus for estimating a channel in a communications system
Title (de)
Verfahren und Vorrichtung zur Kanalschätzung in einem Kommunikationssystem
Title (fr)
Procédé et appareil d'estimation de canal dans un système de communications
Publication
Application
Priority
EP 06019701 A 20060920
Abstract (en)
The present invention provides a method for estimating a channel in a communications system. In the communications system, data is transmitted in at least one unit. The channel is estimated based on a first pilot symbol and on a second pilot symbol, resulting in a first pilot estimation output and a second pilot estimation output. For each received unit, the method comprises the following steps: In a first step, a first channel estimation is determined by utilizing said first and second pilot estimation output according to a first channel estimation scheme. In a second step, a second channel estimation is determined by utilizing said first and second pilot estimation output according to a second channel estimation scheme. In a third step, the method selects between said first and said second channel estimation scheme to be applied based on a decision metric. The decision metric quantifies a distance between expected data and data equalized based on said first and second channel estimation.
IPC 8 full level
H04L 25/02 (2006.01); H04L 25/03 (2006.01)
CPC (source: EP)
H04L 25/0212 (2013.01); H04L 25/0232 (2013.01); H04L 25/03292 (2013.01); H04L 2025/03414 (2013.01)
Citation (search report)
- [Y] WO 0002328 A1 20000113 - ERICSSON INC [US]
- [A] EP 1067709 A1 20010110 - MITSUBISHI ELECTRIC CORP [JP]
- [A] WO 0022791 A1 20000420 - ERICSSON TELEFON AB L M [SE]
- [YD] MICHELE MORELLI ET AL: "A Comparison of Pilot-Aided Channel Estimation Methods for OFDM Systems", IEEE TRANSACTIONS ON SIGNAL PROCESSING, IEEE SERVICE CENTER, NEW YORK, NY, US, vol. 49, no. 12, December 2001 (2001-12-01), XP011059500, ISSN: 1053-587X
- [A] AKHTMAN J ET AL: "Generic Reduced-Complexity MMSE Channel Estimation for OFDM and MC-CDMA", VEHICULAR TECHNOLOGY CONFERENCE, 2005. VTC 2005-SPRING. 2005 IEEE 61ST STOCKHOLM, SWEDEN 30 APRIL - 01 MAY 2005, PISCATAWAY, NJ, USA,IEEE, 30 May 2005 (2005-05-30), pages 528 - 532, XP010855449, ISBN: 0-7803-8887-9
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK YU
DOCDB simple family (publication)
DOCDB simple family (application)
EP 06019701 A 20060920; EP 2007059808 W 20070918